[Bug 1770173] Re: 18.04 install stuck on grub install

[Mike Tallroth]

Sorry, this is my first time trying to debug os-level installer. I don't
know how to switch the install from auto to manual, then back to auto.

I ran the auto install through to the point where it was waiting for me
to confirm the grub install on the master boot record, where I would
normally say yes. At that point, I switched over to a console (Alt-F2),
and ran the os-prober manually and captured the output. When switching
back to the auto installer (Alt-F1), I answered the question (yes), and
it gave me a different failure.

I wasn't focusing on that failure, as I was thinking the os-prober
output was the interesting part. What I do remember is that when running
it straight through automatically, it put up a list of my drives asking
which one I wanted to install grub on (mbr on sda, partition on sdb, or
sdc, or sdd). This time, when switching back from the command line
console to the installer console, it didn't give me my list of drives to
choose from, and it popped up a text field for me to enter the drive
name to do the grub install on. When I entered /dev/sda, it gave the
failure.

I'll redo it tonight and get more specific detail of the failure.

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https://bugs.launchpad.net/bugs/1770173

Title:
  18.04 install stuck on grub install

Status in os-prober package in Ubuntu:
  Incomplete

Bug description:
  Installation freezes on grub install at 66%. syslog shows grub-install
  ran successfully, then seems to have actually gotten stuck in the next
  step (osprober). Photo attached, sorry for the terrible quality from
  HTC.

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